vanesssa04 vanesssa04

16-06-2020
Mathematics

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permutations and combination math 30 question!

How many different combinations of 3 letters can be made using all 26 letters in the alphabet?

a) 15 600

b) 2600

c) 23

d) 69

Respuesta :

Stephen46 Stephen46

16-06-2020

Answer:

The answer is 2,600

Step-by-step explanation:

nCr=n!/r!(n-r)!

26C3=26!/3!(26-3)!

=26!/3!(23!)

= 2600

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